Patents Assigned to Gem Power, LLC
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Patent number: 8427166Abstract: An invention is provided for determining a state of health of a battery. The invention includes applying a predefined load profile to a battery, and obtaining a plurality of battery response voltage data corresponding to points along the predefined load profile. The battery electrical double layer capacity data is calculated from the battery response voltage data, and thereafter utilized to determine the state of health of the battery.Type: GrantFiled: October 19, 2009Date of Patent: April 23, 2013Assignee: GEM Power, LLCInventors: Boris J. Tsenter, John E. James
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Publication number: 20100039116Abstract: An invention is provided for determining a state of health of a battery. The invention includes applying a predefined load profile to a battery, and obtaining a plurality of battery response voltage data corresponding to points along the predefined load profile. The battery electrical double layer capacity data is calculated from the battery response voltage data, and thereafter utilized to determine the state of health of the battery.Type: ApplicationFiled: October 19, 2009Publication date: February 18, 2010Applicant: GEM POWER, LLCInventors: Boris J. Tsenter, John E. James
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Patent number: 7605591Abstract: An invention is provided for determining a state of health of a battery. The invention includes applying a predefined load profile to a battery, and obtaining a plurality of battery response voltage data corresponding to points along the predefined load profile. A matrix of parameters, which includes, among other data, battery ohm resistance data, battery chemical resistance data, and battery electrical double layer capacity data, is calculated from the battery response voltage data. Thereafter, the matrix of parameters is utilized to determine the state of health of the battery.Type: GrantFiled: March 28, 2006Date of Patent: October 20, 2009Assignee: GEM Power, LLCInventors: Boris J. Tsenter, John E. James
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Patent number: 7446509Abstract: An invention is provided for detecting polarization in a battery during battery charging. The invention includes applying a waveform to a battery, and obtaining a plurality of battery response voltage readings corresponding to points along the applied waveform. A battery response voltage curve is calculated based on the voltage differences between the plurality of battery response voltage readings. A battery polarization point is then identified when the slope of the battery response voltage curve stops increasing at an increasing rate. To enhance accuracy, a plurality of battery response voltage curves can be calculated, each based on voltage differences between battery response voltage readings taken along the waveform. The battery polarization point can then be identified when the slopes of all the battery response voltage curves stop increasing at an increasing rate.Type: GrantFiled: April 6, 2005Date of Patent: November 4, 2008Assignee: Gem Power, LLCInventor: John E. James
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Publication number: 20070236225Abstract: An invention is provided for determining a state of health of a battery. The invention includes applying a predefined load profile to a battery, and obtaining a plurality of battery response voltage data corresponding to points along the predefined load profile. A matrix of parameters, which includes, among other data, battery ohm resistance data, battery chemical resistance data, and battery electrical double layer capacity data, is calculated from the battery response voltage data. Thereafter, the matrix of parameters is utilized to determine the state of health of the battery.Type: ApplicationFiled: March 28, 2006Publication date: October 11, 2007Applicant: GEM Power, LLCInventors: Boris Tsenter, John James
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Publication number: 20050248314Abstract: An invention is provided for detecting polarization in a battery during battery charging. The invention includes applying a waveform to a battery, and obtaining a plurality of battery response voltage readings corresponding to points along the applied waveform. A battery response voltage curve is calculated based on the voltage differences between the plurality of battery response voltage readings. A battery polarization point is then identified when the slope of the battery response voltage curve stops increasing at an increasing rate. To enhance accuracy, a plurality of battery response voltage curves can be calculated, each based on voltage differences between battery response voltage readings taken along the waveform. The battery polarization point can then be identified when the slopes of all the battery response voltage curves stop increasing at an increasing rate.Type: ApplicationFiled: April 6, 2005Publication date: November 10, 2005Applicant: GEM Power, LLCInventor: John James